The underlying economic difference is that people are reluctant to give money to the poor because they see the level of one's wealth, but it is not wrong to help a hungry person just by giving money. But if we give them automatic money they will be lazy to find a decent job
They scam because they are lazy to make effort to earn money,they just want to make easy for them,so they scam,some scammer is because they are jealous what they can see especially if those people are growing up their standard of their life,or getting rich,then those scammer will take for granted to do it.